The Challenger Deep is the deepest known point of the seabed of Earth, located in the western Pacific Ocean at the … See more

Over many years, the search for, and investigation of, the location of the maximum depth of the world's oceans has involved many different vessels, and continues into the twenty-first century.
The accura… See more

Since May 2000, with the help of non-degraded signal satellite navigation, civilian surface vessels equipped with professional dual-frequency capable satellite navigation equipment can measure and establish their geodetic po… See more

On 23 January 1960, the Swiss-designed Trieste, originally built in Italy and acquired by the U.S. Navy, supported by the USS Wandank (ATF 204) and escorted by the USS Lewis (DE 535), descended to the ocean floor … See more

The summary report of the HMS Challenger expedition lists radiolaria from the two dredged samples taken when the Challenger Deep was first discovered. These (Nassellaria and Spumellaria) were reported in … See more

• Oceans portal
• Emden Deep
• Horizon Deep
• Litke Deep, closest point to Earth's center
• Sirena Deep (formerly HMRG Deep)… See more

• "Navy Bathyscaph Trieste Makes 37,800-foot Dive" (Press release). U.S. Department of the Navy. 23 January 1960. Archived from the original on 18 April 2002.
• Mariana Trench… See more